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CN210271896U - Medium-voltage power cable easy to radiate heat - Google Patents

Medium-voltage power cable easy to radiate heat Download PDF

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Publication number
CN210271896U
CN210271896U CN201921294859.2U CN201921294859U CN210271896U CN 210271896 U CN210271896 U CN 210271896U CN 201921294859 U CN201921294859 U CN 201921294859U CN 210271896 U CN210271896 U CN 210271896U
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China
Prior art keywords
layer
heat dissipation
cable
power cable
insulating
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CN201921294859.2U
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Chinese (zh)
Inventor
董吟梅
陆秀国
王友香
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Anhui Hui Ning Electrical Instrument Group Co ltd
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Anhui Hui Ning Electrical Instrument Group Co ltd
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Priority to CN201921294859.2U priority Critical patent/CN210271896U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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Abstract

The utility model discloses a power cable technical field's a middling pressure power cable of easy radiating, include by interior conductor, conductor shielding layer, insulating shield, metallic shield and the insulating oversheath that nestification set up in proper order outside to, metallic shield's surface covers there is the heat dissipation layer, be provided with the metal mesh layer between heat dissipation layer and the insulating oversheath, for the mutual cladding of traditional multilayer and lead to the poor problem of radiating effect, this heat dissipation chamber can be fine distribute away the heat that produces the cable inside, realize the cooling to the cable, improve heat-resisting, wear-resisting, the fire behaviour of cable, improved the water blocking performance simultaneously.

Description

Medium-voltage power cable easy to radiate heat
Technical Field
The utility model relates to a power cable technical field specifically is an easy radiating medium voltage power cable.
Background
Cable is typically a rope-like cable made up of several or groups of at least two twisted wires, each group insulated from each other and often twisted around a center, with highly insulated covering layers covering the entire cable, wire and cable being the material used for power, communication and related transmission applications. "wires" and "cables" are not strictly defined. Products with small number of cores, small product diameter and simple structure are generally called wires, products without insulation are called bare wires, and other products are called cables; the larger (greater than 6 square millimeters) cross-sectional area of the conductor is called a large wire, the smaller (less than or equal to 6 square millimeters) is called a small wire, and the insulated wire is also called a patch wire.
Current medium voltage cable mainly includes internal shield, insulation, external shield, metallic shield, and when using, the heat that inside produced is inconvenient dispels the heat to it, leads to inside the cable to melt because of the too high production of heat, has influenced the life of cable, and the inside unable large-traffic electric current that satisfies of cable passes through, leads to the service current of cable to receive certain restriction, when taking place the short circuit, can't protect the cable.
Based on this, the utility model designs an easy radiating middling pressure power cable to solve the above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an easy radiating middling pressure power cable, the heat with the inside production of cable that can be fine distributes away, realizes the cooling to the cable, improves heat-resisting, wear-resisting, the fire behaviour of cable to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an easy radiating middling pressure power cable, includes conductor, conductor shielding layer, insulating shield layer, metal shielding layer and the insulating oversheath that nests in proper order from inside to outside and sets up, the surface of metal shielding layer covers there is the heat dissipation layer, be provided with the metal mesh layer between heat dissipation layer and the insulating oversheath.
Preferably, the heat dissipation layer includes the aluminium foil layer, the internal surface of aluminium foil layer evenly is equipped with the arch that contacts with the metallic shield layer, evenly open on the outer wall of aluminium foil layer has the heat dissipation passageway.
Preferably, two heat dissipation channels are arranged between two adjacent aluminum foil layers.
Preferably, the metal mesh layer is made of an aluminum alloy.
Preferably, the insulating outer sheath is made of cross-linked polyethylene.
Compared with the prior art, the beneficial effects of the utility model are that: this kind of easy radiating medium voltage power cable is through at metal-shielded layer outer cladding heat dissipation layer and metal mesh layer, for the mutual cladding of traditional multilayer and lead to the poor problem of radiating effect, this heat dissipation chamber can be fine distribute away the heat that the cable is inside to produce, realizes the cooling to the cable, and insulating oversheath is made by crosslinked polyethylene, improves heat-resisting, wear-resisting, the fire behaviour of cable, has improved the water blocking performance simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of the heat dissipation layer of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a conductor; 2. a conductor shield layer; 3. an insulating layer; 4. an insulating shield layer; 5. a metal shielding layer; 6. A heat dissipation layer; 61. an aluminum foil layer; 62. a protrusion; 63. a heat dissipation channel; 7. a metal mesh layer; 8. an insulating outer sheath.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an easy radiating middling pressure power cable, includes conductor 1, conductor shielding layer 2, insulating layer 3, insulating shield 4, metallic shield 5 and insulating oversheath 8 that from inside to outside nestification set up in proper order, the surface of metallic shield 5 covers there is heat dissipation layer 6, be provided with metal mesh layer 7 between heat dissipation layer 6 and the insulating oversheath 8.
Wherein the heat dissipation layer 6 comprises an aluminum foil layer 61, the inner surface of the aluminum foil layer 61 is uniformly provided with protrusions 62 contacting with the metal shielding layer 5, the outer wall of the aluminum foil layers 61 is uniformly provided with heat dissipation channels 63, two heat dissipation channels 63 are arranged between two adjacent aluminum foil layers 61, the aluminum foil layers 61 are used as heat dissipation base layers, and the aluminum foil layers have good heat dissipation effect, and the inner surface of the aluminum foil layer 61 is uniformly provided with the bulges 62 contacting with the metal shielding layer 5, the bulges 62 form a heat dissipation cavity between the aluminum foil layer 61 and the metal shielding layer 5, compared with the problem of poor heat dissipation effect caused by the mutual coating of the traditional multilayer, this heat dissipation chamber can be fine distribute away the heat that the cable is inside to heat dissipation channel 63 through evenly setting up on aluminium foil layer 61 can be fine distribute away the heat, the inside heat of cable can not appear and pile up and produce bad influence.
The metal mesh layer 7 is made of aluminum alloy, has a good heat dissipation effect, and can quickly discharge heat generated in the medium-voltage cable.
The insulating outer sheath 8 is made of cross-linked polyethylene, and the cross-linked polyethylene is cross-linked through irradiation of electron beams, so that covalent bonds among polyethylene molecules form a net-shaped three-dimensional structure, and a three-dimensional lattice smaller than water molecules is formed, the performance of polyethylene resin is rapidly improved, and a series of physical and chemical properties such as thermal deformation, wear resistance, chemical resistance, stress cracking resistance and the like are improved, so that the heat resistance, wear resistance and flame retardance of the cable are integrally improved, and meanwhile, the water blocking performance is improved.
The utility model discloses a parts such as conductor 1, conductor shielding layer 2, insulating layer 3, insulating shielding layer 4 and metallic shield 5 are the parts that general standard spare or technical personnel in the field know, and its structure and principle all are this technical personnel all can learn through the technical manual or learn through conventional experimental method, the utility model discloses can produce the heat in inside when the cable uses, heat dissipation layer 6 and metallic mesh layer 7 realize the cooling to the cable, and insulating oversheath 8 is made by crosslinked polyethylene, improves heat-resisting, wear-resisting, the fire behaviour of cable, has improved the water blocking performance simultaneously.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (5)

1. The utility model provides an easy radiating medium voltage power cable which characterized in that: the cable comprises a conductor (1), a conductor shielding layer (2), an insulating layer (3), an insulating shielding layer (4), a metal shielding layer (5) and an insulating outer sheath (8) which are sequentially nested from inside to outside, wherein a heat dissipation layer (6) covers the outer surface of the metal shielding layer (5), and a metal net layer (7) is arranged between the heat dissipation layer (6) and the insulating outer sheath (8).
2. An easily heat-dissipating medium-voltage power cable according to claim 1, characterized in that: the heat dissipation layer (6) comprises an aluminum foil layer (61), the inner surface of the aluminum foil layer (61) is uniformly provided with a protrusion (62) which is in contact with the metal shielding layer (5), and the outer wall of the aluminum foil layer (61) is uniformly provided with a heat dissipation channel (63).
3. An easily heat-dissipating medium-voltage power cable according to claim 2, characterized in that: two heat dissipation channels (63) are arranged between two adjacent aluminum foil layers (61).
4. An easily heat-dissipating medium-voltage power cable according to claim 1, characterized in that: the metal mesh layer (7) is made of aluminum alloy.
5. An easily heat-dissipating medium-voltage power cable according to claim 1, characterized in that: the insulating outer sheath (8) is made of cross-linked polyethylene.
CN201921294859.2U 2019-08-09 2019-08-09 Medium-voltage power cable easy to radiate heat Active CN210271896U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921294859.2U CN210271896U (en) 2019-08-09 2019-08-09 Medium-voltage power cable easy to radiate heat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921294859.2U CN210271896U (en) 2019-08-09 2019-08-09 Medium-voltage power cable easy to radiate heat

Publications (1)

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CN210271896U true CN210271896U (en) 2020-04-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119092205A (en) * 2024-07-16 2024-12-06 江苏宝安电缆股份有限公司 Thermally stable medium and high voltage cables suitable for high temperature difference scenarios

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119092205A (en) * 2024-07-16 2024-12-06 江苏宝安电缆股份有限公司 Thermally stable medium and high voltage cables suitable for high temperature difference scenarios

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